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- PDB-7xcr: Cryo-EM structure of Dot1L and H2BK34ub-H3K79Nle nucleosome 1:1 c... -

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Basic information

Entry
Database: PDB / ID: 7xcr
TitleCryo-EM structure of Dot1L and H2BK34ub-H3K79Nle nucleosome 1:1 complex
Components
  • (DNA (146-MER)) x 2
  • Histone H2A
  • Histone H2B type 1-K
  • Histone H4
  • Histone domain-containing protein
  • Histone-lysine N-methyltransferase, H3 lysine-79 specific
  • Ubiquitin
KeywordsNUCLEAR PROTEIN / Complex / Dot1L / H2BK34ub / Nucleosome
Function / homology
Function and homology information


[histone H3]-lysine79 N-trimethyltransferase / histone H3K79 methyltransferase activity / histone H3K79 trimethyltransferase activity / regulation of transcription regulatory region DNA binding / symbiont entry into host cell via disruption of host cell glycocalyx / regulation of receptor signaling pathway via JAK-STAT / histone H3 methyltransferase activity / symbiont entry into host cell via disruption of host cell envelope / histone methyltransferase activity / virus tail ...[histone H3]-lysine79 N-trimethyltransferase / histone H3K79 methyltransferase activity / histone H3K79 trimethyltransferase activity / regulation of transcription regulatory region DNA binding / symbiont entry into host cell via disruption of host cell glycocalyx / regulation of receptor signaling pathway via JAK-STAT / histone H3 methyltransferase activity / symbiont entry into host cell via disruption of host cell envelope / histone methyltransferase activity / virus tail / subtelomeric heterochromatin formation / Replacement of protamines by nucleosomes in the male pronucleus / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere organization / Inhibition of DNA recombination at telomere / RNA Polymerase I Promoter Opening / Meiotic synapsis / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / DNA methylation / Condensation of Prophase Chromosomes / DNA damage checkpoint signaling / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / innate immune response in mucosa / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / antimicrobial humoral immune response mediated by antimicrobial peptide / structural constituent of chromatin / antibacterial humoral response / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / nucleosome / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Processing of DNA double-strand break ends / HATs acetylate histones / Senescence-Associated Secretory Phenotype (SASP) / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Oxidative Stress Induced Senescence / defense response to Gram-negative bacterium / methylation / Estrogen-dependent gene expression / killing of cells of another organism / gene expression / nucleic acid binding / RNA polymerase II-specific DNA-binding transcription factor binding / transcription coactivator activity / chromosome, telomeric region / Ub-specific processing proteases / defense response to Gram-positive bacterium / Amyloid fiber formation / protein heterodimerization activity / DNA repair / intracellular membrane-bounded organelle / positive regulation of transcription by RNA polymerase II / protein-containing complex / extracellular space / DNA binding / nucleoplasm / nucleus / cytosol / cytoplasm
Similarity search - Function
Histone H3-K79 methyltransferase, metazoa / Histone-lysine N-methyltransferase DOT1 domain / Histone H3-K79 methyltransferase / Histone methylation protein DOT1 / Histone-lysine N-methyltransferase DOT1 (EC 2.1.1.43) domain profile. / Histone, subunit A / Pectate lyase superfamily protein / Rhamnogalacturonase A/epimerase, pectate lyase-like / Histone, subunit A / Pectin lyase fold ...Histone H3-K79 methyltransferase, metazoa / Histone-lysine N-methyltransferase DOT1 domain / Histone H3-K79 methyltransferase / Histone methylation protein DOT1 / Histone-lysine N-methyltransferase DOT1 (EC 2.1.1.43) domain profile. / Histone, subunit A / Pectate lyase superfamily protein / Rhamnogalacturonase A/epimerase, pectate lyase-like / Histone, subunit A / Pectin lyase fold / Pectin lyase fold/virulence factor / Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1 / : / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Ubiquitin-like (UB roll) / Histone-fold / S-adenosyl-L-methionine-dependent methyltransferase superfamily / Roll / Orthogonal Bundle / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
S-ADENOSYLMETHIONINE / DNA / DNA (> 10) / DNA (> 100) / Histone H4 / Histone H2B type 1-K / Tail fiber / Histone H2A / Histone-lysine N-methyltransferase, H3 lysine-79 specific / H3.4 histone
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.57 Å
AuthorsAi, H.S. / Liu, A.J. / Lou, Z.Y. / Liu, L.
Funding support China, 5items
OrganizationGrant numberCountry
Other private2017YFA0505200 China
National Natural Science Foundation of China (NSFC)21977090 China
National Natural Science Foundation of China (NSFC)21532004 China
National Natural Science Foundation of China (NSFC)91753205 China
National Natural Science Foundation of China (NSFC)81621002 China
CitationJournal: Nat Chem Biol / Year: 2022
Title: H2B Lys34 Ubiquitination Induces Nucleosome Distortion to Stimulate Dot1L Activity.
Authors: Huasong Ai / Maoshen Sun / Aijun Liu / Zixian Sun / Tingting Liu / Lin Cao / Lujun Liang / Qian Qu / Zichen Li / Zhiheng Deng / Zebin Tong / Guochao Chu / Xiaolin Tian / Haiteng Deng / Suwen ...Authors: Huasong Ai / Maoshen Sun / Aijun Liu / Zixian Sun / Tingting Liu / Lin Cao / Lujun Liang / Qian Qu / Zichen Li / Zhiheng Deng / Zebin Tong / Guochao Chu / Xiaolin Tian / Haiteng Deng / Suwen Zhao / Jia-Bin Li / Zhiyong Lou / Lei Liu /
Abstract: Ubiquitination-dependent histone crosstalk plays critical roles in chromatin-associated processes and is highly associated with human diseases. Mechanism studies of the crosstalk have been of the ...Ubiquitination-dependent histone crosstalk plays critical roles in chromatin-associated processes and is highly associated with human diseases. Mechanism studies of the crosstalk have been of the central focus. Here our study on the crosstalk between H2BK34ub and Dot1L-catalyzed H3K79me suggests a novel mechanism of ubiquitination-induced nucleosome distortion to stimulate the activity of an enzyme. We determined the cryo-electron microscopy structures of Dot1L-H2BK34ub nucleosome complex and the H2BK34ub nucleosome alone. The structures reveal that H2BK34ub induces an almost identical orientation and binding pattern of Dot1L on nucleosome as H2BK120ub, which positions Dot1L for the productive conformation through direct ubiquitin-enzyme contacts. However, H2BK34-anchored ubiquitin does not directly interact with Dot1L as occurs in the case of H2BK120ub, but rather induces DNA and histone distortion around the modified site. Our findings establish the structural framework for understanding the H2BK34ub-H3K79me trans-crosstalk and highlight the diversity of mechanisms for histone ubiquitination to activate chromatin-modifying enzymes.
History
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
L: Ubiquitin
F: Histone H4
G: Histone H2A
H: Histone H2B type 1-K
K: Histone-lysine N-methyltransferase, H3 lysine-79 specific
E: Histone domain-containing protein
A: Histone domain-containing protein
D: Histone H2B type 1-K
C: Histone H2A
B: Histone H4
I: DNA (146-MER)
J: DNA (146-MER)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)225,07913
Polymers224,68112
Non-polymers3981
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: native gel electrophoresis, gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 6 types, 10 molecules LFBGCHDKEA

#1: Protein Ubiquitin


Mass: 8576.831 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBB / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P0CG47
#2: Protein Histone H4


Mass: 10061.849 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: A0A672GII6
#3: Protein Histone H2A


Mass: 11865.871 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: HIST1H2AB, HIST1H2AE, hCG_1640984, hCG_1787383 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q08AJ9
#4: Protein Histone H2B type 1-K / H2B K / HIRA-interacting protein 1


Mass: 10477.994 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: H2BC12, H2BFT, HIRIP1, HIST1H2BK / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: O60814
#5: Protein Histone-lysine N-methyltransferase, H3 lysine-79 specific / DOT1-like protein


Mass: 37930.039 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: SAM / Source: (gene. exp.) Homo sapiens (human) / Gene: DOT1L / Production host: Escherichia coli BL21(DE3) (bacteria)
References: UniProt: Q8TEK3, histone-lysine N-methyltransferase
#6: Protein Histone domain-containing protein


Mass: 11615.594 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) / References: UniProt: S4RAZ3

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DNA chain , 2 types, 2 molecules IJ

#7: DNA chain DNA (146-MER)


Mass: 44825.559 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#8: DNA chain DNA (146-MER)


Mass: 45305.852 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Non-polymers , 1 types, 1 molecules

#9: Chemical ChemComp-SAM / S-ADENOSYLMETHIONINE


Mass: 398.437 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C15H22N6O5S / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Complex of Dot1L(1-416) and H2BK34ub nucleosome / Type: COMPLEX / Entity ID: #1-#8 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingAverage exposure time: 2.56 sec. / Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.18.2_3874: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 2.57 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 199459 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00911225
ELECTRON MICROSCOPYf_angle_d0.95415192
ELECTRON MICROSCOPYf_dihedral_angle_d20.4151536
ELECTRON MICROSCOPYf_chiral_restr0.0531733
ELECTRON MICROSCOPYf_plane_restr0.0061966

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